TERMIUM Plus®
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CRUSTAL SOURCE [1 record]
Record 1 - internal organization data 2003-12-10
Record 1, English
Record 1, Subject field(s)
- Metals Mining
- Geochemistry
- Petrography
Record 1, Main entry term, English
- crustal source
1, record 1, English, crustal%20source
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
We can often differentiate between these two sources (crustal and mantle) by examining variations in 34S/32S. ... Originally, all the earth's sulphur was in the mantle. Much of that transferred to the crust has undergone biogenic fractionation ... It is now held to be an oversimplification to claim that for all natural sulphur, a narrow range of [delta]34S close to zero indicates a mantle source, and a wide range of [delta]S34 a crustal source. 2, record 1, English, - crustal%20source
Record number: 1, Textual support number: 2 CONT
Consistent with this hypothesis of a crustal source of sulphur is the fact that virtually all nickel deposits occur in rocks underlain by continental crust. 3, record 1, English, - crustal%20source
Record 1, French
Record 1, Domaine(s)
- Mines métalliques
- Géochimie
- Pétrographie
Record 1, Main entry term, French
- origine crustale
1, record 1, French, origine%20crustale
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- source crustale 2, record 1, French, source%20crustale
correct, feminine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
L'origine des magmas granitiques. La véritable distinction est à faire entre [...] les granites issus de la fusion partielle de la croûte par des processus métamorphiques [...] et [...] les granites issus de la différenciation d'un magma basaltique ou calco-alcalin [...] d'origine sous-crustale (mantellique). Trois cas, que l'on peut distinguer à partir des rapports isotopiques du strontium, sont donc possibles : a) L'origine crustale [...] On peut [...] remarquer que, dans les leucogranites, le rapport 87Sr/86Sr est supérieur à 0,710, alors qu'il n'est que de 0,702 dans le manteau. b) L'origine mantellique [...] c) Origine mixte, mantellique et crustale [...] 1, record 1, French, - origine%20crustale
Record number: 1, Textual support number: 2 CONT
Le fait que les gisements de sulfures de nickel soient pratiquement tous situés dans des roches reposant sur une croûte continentale conforte l'hypothèse voulant que le soufre provienne d'une source crustale. 2, record 1, French, - origine%20crustale
Record 1, Spanish
Record 1, Textual support, Spanish
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